Public Date:
1334786: CVE-2016-4556 squid: SIGSEGV in ESIContext response handling
An incorrect reference counting flaw was found in the way Squid processes ESI responses. If Squid is configured as reverse-proxy, for for TLS/HTTPS interception, an attacker controlling a server accessed by Squid, could crash the squid worker, causing a Denial of Service attack.

Find out more about CVE-2016-4556 from the MITRE CVE dictionary dictionary and NIST NVD.

CVSS v2 metrics

Base Score 4.3
Base Metrics AV:N/AC:M/Au:N/C:N/I:N/A:P
Access Vector Network
Access Complexity Medium
Authentication None
Confidentiality Impact None
Integrity Impact None
Availability Impact Partial

Find out more about Red Hat support for the Common Vulnerability Scoring System (CVSS).

Red Hat Security Errata

Platform Errata Release Date
Red Hat Enterprise Linux 6 (squid) RHSA-2016:1138 2016-05-31
Red Hat Enterprise Linux 6 (squid34) RHSA-2016:1140 2016-05-31
Red Hat Enterprise Linux 7 (squid) RHSA-2016:1139 2016-05-31

Affected Packages State

Platform Package State
Red Hat Enterprise Linux 5 squid Not affected

External References

Last Modified

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